booted netbsd (GENERIC.MP) with cpu_hatch() #if 1'd to make it let cpu1
go and it crashed (surprise, surprise).  At the end of writing the crash
dump to disk, these messages came up:

esp0: ICCS: : [intr 0, stat 13, step 4]
esp0: MSGIN: unexpected FC bit: [intr 8, stat 97, step 4]
esp0: msgin: no msg byte available

 - it might not have completed writing the crash dump and those were just
the last messages it sent after the counting.  This is on a sparc20/712.
This isn't easily reproducible as I tried again and it didn't happen, but
maybe I just need to try more times :)

Hmmm, on bootup, I see after a crash dump finished with "succeeded":
savecore: no core dump

Darren